WO2021000177A1 - Module de haut-parleur - Google Patents

Module de haut-parleur Download PDF

Info

Publication number
WO2021000177A1
WO2021000177A1 PCT/CN2019/094077 CN2019094077W WO2021000177A1 WO 2021000177 A1 WO2021000177 A1 WO 2021000177A1 CN 2019094077 W CN2019094077 W CN 2019094077W WO 2021000177 A1 WO2021000177 A1 WO 2021000177A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover plate
upper cover
lower cover
bottom wall
baffle
Prior art date
Application number
PCT/CN2019/094077
Other languages
English (en)
Chinese (zh)
Inventor
陈志臣
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/094077 priority Critical patent/WO2021000177A1/fr
Priority to CN201921033582.8U priority patent/CN210168205U/zh
Publication of WO2021000177A1 publication Critical patent/WO2021000177A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the field of electro-acoustic conversion, in particular to a speaker module.
  • a gas absorbing material also known as a sound absorbing material, such as activated carbon or zeolite
  • a sound absorbing material such as activated carbon or zeolite
  • the gas absorption material in the resonance space of the speaker causes a virtual enlargement of the resonance space (Virtual Enlargement) through gas absorption and release, so that the resonance frequency of the speaker device is reduced to a value that can be achieved with a larger resonance space. It is generally used for Enhance the low frequency effect of the speaker.
  • the purpose of the present invention is to provide a loudspeaker module that can encapsulate more sound-absorbing materials to fully exert the performance of the sound-absorbing materials.
  • the speaker module provided by this embodiment includes an upper cover plate having a receiving cavity, a lower cover plate opened opposite to the upper cover plate, and a speaker unit received in the receiving cavity and fixed to the upper cover plate.
  • the upper cover is provided with an upper cover bottom wall and a rib extending from the upper cover bottom wall toward the lower cover in the area where the speaker unit is not placed, and the speaker module further includes The air-permeable spacer fixed to the ribs, the bottom wall of the upper cover plate, the ribs, and the air-permeable spacer are jointly enclosed to form an airflow groove body, and the lower cover plate corresponds to the position of the airflow groove body
  • a bottom wall of the lower cover plate and a baffle extending from the bottom wall of the lower cover plate toward the upper cover plate and abutting against the air-permeable spacer are provided, the baffle, the bottom wall of the lower cover plate and the air-permeable spacer are common
  • a filling cavity for containing sound-absorbing material is formed, and the projection of the ba
  • the protruding ribs enclose the groove side wall of the air flow groove body, the groove side wall is provided with a groove top wall facing the bottom wall of the lower cover plate, and the air-permeable spacer completely covers the groove Top wall.
  • the upper cover plate further includes two sets of oppositely opened long-axis side walls and two sets of short-axis side walls oppositely opened and connected to the two sets of long-axis side walls.
  • the baffle and the lower cover plate It is an integral structure, and the opening direction of the baffle is consistent with the opening direction of the side wall of the short axis, and the two ends of the baffle are respectively against the two groups of the long axis sides of the upper cover plate The inner surface of the wall.
  • both sides of the rib are further provided with stop posts that cooperate with the baffle to separate the receiving cavity and the filling cavity, one end of the stop post is fixed on the outer surface of the rib, and the stop post The other end extends to the inner surface of the long axis side wall of the upper cover plate.
  • the speaker module further includes a flexible circuit board FPC board with one end electrically connected to the speaker unit and the other end protruding from the short axis side wall of the upper cover.
  • FPC board flexible circuit board
  • the bottom wall of the lower cover plate is provided with a powder filling hole that is convenient for filling with sound-absorbing material, the powder filling hole is communicated with the filling cavity, and the speaker module further includes being fixed on the powder filling hole. Sealed sealing cover sheet.
  • a leak hole communicating with the filling cavity is further provided on the bottom wall of the lower cover plate, and the hole diameter of the leak hole is smaller than the hole diameter of the powder filling hole.
  • the speaker module of the present invention puts the sound-absorbing material on the lower cover instead of sharing the space for placing the speaker unit, and can obtain a larger filling cavity to accommodate more sound-absorbing materials.
  • the airflow in the receiving cavity needs to pass through the air-permeable partition and the airflow trough before entering the sound-absorbing material area, which increases the airflow path, improves the airflow compliance, and further improves the sound effect.
  • the size of the filling cavity is not affected by the size of the air-permeable partition, and is determined by the relative position of the baffle and the accommodation space of the upper cover. Compared with the size of the air-permeable partition in the prior art, the filling area of the sound-absorbing material is determined by the utility model.
  • the new type of filling cavity has a larger volume and can maximize the filling area of the sound-absorbing material.
  • the arrangement of the air flow cavity enlarges the contact area between the sound-absorbing material and the sound wave emitted by the speaker unit, and can better exert the function of the sound-absorbing material. Therefore, the utility model can be filled with more sound-absorbing materials, and the performance of the sound-absorbing materials can also be better utilized.
  • Figure 1 is a schematic structural diagram of a speaker module in an embodiment of the utility model
  • FIG. 2 is a schematic diagram of a three-dimensional exploded structure of the speaker module in the embodiment of the utility model
  • Figure 3 is a schematic diagram of a partial structure of a speaker module in an embodiment of the utility model
  • Figure 4 is a schematic diagram of the structure of the upper cover in the embodiment of the utility model
  • Figure 5 is a schematic diagram of the structure of the lower cover in the embodiment of the utility model
  • Figure 6 is a cross-sectional view of the speaker module in the embodiment of the utility model along the direction A-A in Figure 1;
  • FIG. 7 is a partial enlarged view of the components in the area B along the circle B in FIG. 6 of the speaker module in the embodiment of the present invention.
  • This utility model discloses a speaker module, which includes an upper cover 1 with a receiving cavity 12, a lower cover 2 opened opposite to the upper cover 1, and a The speaker unit 3 is fixed to the upper cover 1.
  • the upper cover 1 is provided with an upper cover bottom wall 17 and a protrusion extending from the upper cover bottom wall 17 toward the lower cover 2 in the area where the speaker unit 3 is not placed.
  • the rib 11, the speaker module 3 also includes a breathable spacer 5 fixed to the rib 11, the bottom wall 17, the rib 11, and the breathable spacer 5 of the upper cover plate are collectively enclosed to form an airflow groove 111, and the lower cover 2 corresponds to the airflow
  • the position of the tank 111 is provided with a lower cover bottom wall 22 and a baffle 21 extending from the lower cover bottom wall 22 toward the upper cover 1 and abutting the breathable partition 5, the baffle 21, the lower cover bottom wall 22 and
  • the air-permeable spacers 5 together form a filling cavity 13 containing sound-absorbing materials, and the projection of the baffle 21 along the assembly direction of the upper cover plate 1 and the lower cover plate 2 is located within the range of the airflow groove body 111 so that the airflow groove body 111 and the receiving cavity 12 And the air flow slot 111 and the filling cavity 13 are in air flow communication through the air-permeable spacer 5.
  • the breathable spacer 5 is a component that can breathe and play a role in isolation, specifically, it can be a dust-proof mesh, which is a dustproof and acoustic auxiliary used in mobile phones, speakers and other electronic components
  • the material is woven by high-precision looms using polyester and polyester as raw materials. It has the characteristics of variable density, light weight, rigidity, compliance and acoustic resistance.
  • the specific woven material can be one or more of polyethylene terephthalate PET and polyether ether ketone PEEK.
  • the sound-absorbing material 4 is placed on the lower cover 2 instead of sharing the space where the speaker unit 3 is placed, and a larger filling cavity 13 can be obtained to accommodate more sound-absorbing materials 4.
  • the air flow in the accommodating cavity 12 needs to pass through the air-permeable partition 5 and the air flow trough 111 before entering the area of the sound absorbing material 4, which increases the air flow path, improves the air flow compliance, and further improves the sound effect.
  • the size of the filling cavity 13 is not affected by the size of the air-permeable spacer 5, and is determined by the relative position of the baffle 21 and the accommodation space of the upper cover plate 1.
  • the size of the sound-absorbing material 4 is determined For the filling area, the volume of the filling cavity 13 of the present invention is larger, and the filling area of the sound-absorbing material 4 can be enlarged as much as possible.
  • the arrangement of the air flow groove 111 enlarges the contact area between the sound-absorbing material 4 and the sound waves emitted by the speaker unit 3, and can better perform the function of the sound-absorbing material 4. Therefore, the present invention can be filled with more sound-absorbing materials 4, and the performance of the sound-absorbing materials 4 can also be better utilized.
  • the convex rib 11 and the upper cover plate 1 are an integral structure, which is easy to process and shape.
  • the ribs 11 enclose the groove side wall 112 of the air flow groove body 111, the groove side wall 112 is provided with a groove top wall 113 facing the bottom wall of the lower cover plate, and the air-permeable partition 5 completely covers ⁇ Wall 113.
  • One end of the air-permeable spacer 5 in the filling cavity needs to be completely physically separated from the rib 11 to prevent the sound-absorbing material from leaking into the airflow trough 111.
  • the other end of the air-permeable spacer 5 separated by the baffle 21 is also covered with the rib 11, in order to achieve a supporting effect.
  • an opening can also be provided between the other end of the air-permeable spacer 5 and the rib 11, which is beneficial to the air circulation process in the air flow trough 111 and is beneficial to the sound being better absorbed. Material absorption improves the sound-absorbing effect of sound-absorbing materials.
  • the upper cover plate 1 includes two sets of oppositely opened long axis side walls 14 and two sets of short axis side walls 15 oppositely opened and connected to the two sets of long axis side walls 14, a baffle 21 and a lower cover plate 2. It is an integral structure, and the opening direction of the baffle 21 is consistent with the opening direction of the short axis side wall 15, and the two ends of the baffle 21 respectively abut against the inner surfaces of the two sets of long axis side walls 14 of the upper cover 1.
  • the baffle 21 and the lower cover 2 are an integral structure, which is easy to process. The two ends of the baffle 21 are respectively against the long axis side walls 14 of the upper cover 1 to achieve a better sealing effect and avoid powder leakage.
  • both sides of the rib 11 are also provided with stop posts 16 that cooperate with the baffle 21 to separate the receiving cavity 12 and the filling cavity 13.
  • One end of the stop post 16 is fixed on the outer surface of the rib 11, and the other end of the stop post 16 extends To the inner surface of the long axis side wall 14 of the upper cover plate 1.
  • the height of the stop post 16 is the same as the height of the rib 11, and the rib 11 is not in contact with the long axis side wall 14 of the upper cover plate 1.
  • the arrangement of the stop post can fill the gap between the rib 11 and the long axis side wall 14 At the same time, it can also bear the pressure of the baffle 21 at both ends, reducing the force of the air-permeable spacer 5, and achieve the role of assisting the air-permeable spacer 5 to support the baffle 21.
  • the speaker module further includes a flexible circuit board FPC board 6 with one end electrically connected to the speaker unit 3 and the other end protruding from the short axis side wall 15 of the upper cover 1.
  • the FPC board 6 is mainly electrically connected to the speaker unit 3, and realizes the sound production process of the speaker unit 3 through electric signals.
  • the bottom wall 22 of the lower cover plate is provided with a powder filling hole 221 that is convenient for filling with the sound-absorbing material 4.
  • the powder filling hole 221 communicates with the filling cavity 13, and the speaker module also includes a powder filling hole 221 fixed on the powder filling hole 221 for sealing
  • the sealing cover sheet 7 is fixed in the powder filling hole 221 by double-sided tape.
  • the bottom wall 22 of the lower cover plate is also provided with a leakage hole 222 communicating with the filling cavity 13, and the hole diameter of the leakage hole 222 is smaller than the hole diameter of the powder filling hole 221.
  • the leakage hole 222 is provided with a cover sheet to avoid powder leakage and at the same time ensure the circulation of air flow.
  • the powder filling hole 221 is mainly used to fill the sound-absorbing material 4.
  • the assembly direction of the speaker module of the present invention is pointed by the arrow X in Fig. 6, the upper cover 1 is fixed, the speaker unit 3 is first fixed in the X direction, and then the net is fixed on the rib 11 in the X direction Then, cover the lower cover plate 2 in the X direction, and finally pour the sound-absorbing material 4 in the X direction through the powder filling hole 221.
  • the upper cover 1 is provided with a sounding through hole 31 that is convenient for the speaker unit 3 to emit sound, and the sounding through hole 31 communicates with the receiving cavity 12.
  • the sounding through hole 31 and the upper cover plate 1 are integrally formed, and mainly play a sound transmission process.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

Le présent modèle d'utilité est un module de haut-parleur, comprenant une plaque de recouvrement supérieure ayant une cavité de réception, une plaque de recouvrement inférieure disposée à l'opposé de la plaque de recouvrement supérieure, et une unité de haut-parleur logée dans la cavité de réception et fixée à la plaque de recouvrement supérieure. La plaque de recouvrement supérieure est pourvue, dans une zone où l'unité de haut-parleur n'est pas placée, d'une paroi inférieure de plaque de recouvrement supérieure et d'une nervure surélevée qui s'étend vers la plaque de recouvrement inférieure à partir de la paroi inférieure de plaque de recouvrement supérieure. Le module de haut-parleur comprend en outre un séparateur perméable à l'air fixé à la nervure surélevée. La paroi inférieure de la plaque de recouvrement supérieure, la nervure surélevée et le séparateur perméable à l'air forment ensemble un réservoir d'écoulement d'air. La plaque de recouvrement inférieure est pourvue, à une position correspondant au réservoir d'écoulement d'air, d'une paroi inférieure de plaque de recouvrement inférieure et d'un déflecteur qui s'étend vers la plaque de recouvrement supérieure à partir de la paroi inférieure de plaque de recouvrement inférieure et qui vient en butée contre le séparateur perméable à l'air. Le déflecteur, la paroi inférieure de la plaque de recouvrement inférieure et le séparateur perméable à l'air forment ensemble une cavité de remplissage qui loge un matériau absorbant le son. La saillie du déflecteur dans la direction dans laquelle la plaque de recouvrement supérieure et la plaque de recouvrement inférieure sont assemblées est située dans la portée du réservoir d'écoulement d'air de façon à former une communication d'écoulement d'air, par l'intermédiaire du séparateur perméable à l'air, entre le réservoir d'écoulement d'air et la cavité de réception et entre le réservoir d'écoulement d'air et la cavité de remplissage.
PCT/CN2019/094077 2019-06-30 2019-06-30 Module de haut-parleur WO2021000177A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2019/094077 WO2021000177A1 (fr) 2019-06-30 2019-06-30 Module de haut-parleur
CN201921033582.8U CN210168205U (zh) 2019-06-30 2019-07-03 扬声器模组

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/094077 WO2021000177A1 (fr) 2019-06-30 2019-06-30 Module de haut-parleur

Publications (1)

Publication Number Publication Date
WO2021000177A1 true WO2021000177A1 (fr) 2021-01-07

Family

ID=69794175

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/094077 WO2021000177A1 (fr) 2019-06-30 2019-06-30 Module de haut-parleur

Country Status (2)

Country Link
CN (1) CN210168205U (fr)
WO (1) WO2021000177A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212936187U (zh) * 2020-07-09 2021-04-09 瑞声科技(新加坡)有限公司 扬声器壳体及扬声器模组
CN214101763U (zh) * 2020-12-16 2021-08-31 瑞声光电科技(常州)有限公司 一种扬声器箱

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050013452A1 (en) * 2003-07-14 2005-01-20 Ilies Andrei N. Loudspeaker based on the " center of percussion" or the " sweet spot" point, with gas filled hollow oscillating member and fluid flooded voice coil
CN105872917A (zh) * 2016-03-28 2016-08-17 歌尔声学股份有限公司 扬声器模组
CN207266284U (zh) * 2017-09-22 2018-04-20 歌尔科技有限公司 扬声器模组
CN208638704U (zh) * 2018-08-10 2019-03-22 瑞声科技(新加坡)有限公司 扬声器模组
CN109769179A (zh) * 2019-04-10 2019-05-17 歌尔股份有限公司 透气隔离组件及扬声器模组

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050013452A1 (en) * 2003-07-14 2005-01-20 Ilies Andrei N. Loudspeaker based on the " center of percussion" or the " sweet spot" point, with gas filled hollow oscillating member and fluid flooded voice coil
CN105872917A (zh) * 2016-03-28 2016-08-17 歌尔声学股份有限公司 扬声器模组
CN207266284U (zh) * 2017-09-22 2018-04-20 歌尔科技有限公司 扬声器模组
CN208638704U (zh) * 2018-08-10 2019-03-22 瑞声科技(新加坡)有限公司 扬声器模组
CN109769179A (zh) * 2019-04-10 2019-05-17 歌尔股份有限公司 透气隔离组件及扬声器模组

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